everybody wants to pat the dog on the head

Another artist recommends avoiding "good job?" when talking about artwork. “You have to think about it”, he says. “(don’t say) something you wouldn’t utter while patting a dog on the head.”

And I replied “Sometimes you want to just toss out a little encouragement and not spend a half hour trying to figure out a way to describe the effect of lattice of darks in a composition or heightened sensitivity to flowing line quality. You want to accomplish this without finally resorting to the easy astonishment; "Amazing!" 
Sometimes, they've presented a skilled, workmanlike solution on canvas and you just want them to know that they are not forgotten.”